morse_check_static_or_dynamic: we may not find the libraries extension, if...

morse_check_static_or_dynamic: we may not find the libraries extension, if given by the user as a list of linker flags (can be many different things), e.g. -Wl,-rpath,/opt/lib -L/opt/lib -lfoo -lbar, so that we replace FATAL_ERROR by WARNING in the message if extension not found

modules/find/FindMorseCommon.cmake

@@ -70,8 +70,9 @@ macro(morse_finds_remove_duplicates)
   endif()
 endmacro()
 
-# add imported target for non-cmake projects or projects which do not provide
-# "PROJECT"Config.cmake file at installation
+# try to guess libraries extension, if dyanmic or static
+# if dynamic we set ${package}_STATIC to 0, else to 1
+# if we do not find the extension ${package}_STATIC is not set at all
 macro(morse_check_static_or_dynamic package libraries)
   list(GET ${libraries} 0 _first_lib)
   get_filename_component(_suffix ${_first_lib} EXT)
@@ -124,7 +125,7 @@ macro(morse_check_static_or_dynamic package libraries)
       endif()
     endif()
   else()
-    message(FATAL_ERROR "${package} could not detect library extension")
+    message( WARNING "${package} could not detect library extension")
   endif()
 endmacro()